Issue 19, 2022

Modification of graphite carbon nitride by adding an ultra-micro amount of triaminotriphenylamine for superior photocatalytic hydrogen evolution

Abstract

In this paper, a novel pristine carbon nitride (np-CN) with hollow capsule-like morphology was facilely prepared by the thermal polymerization of melamine and cyanuric chloride at 550 °C in air for 4 h. Then, modified carbon nitride (CN-P4mg) micro-flakes with zigzag edges were synthesized by the copolymerization of melamine, cyanuric chloride, and triaminotriphenylamine with a mass fraction of 0.13%. Analysis of the microstructure, surface state, porosity, and optoelectronic properties of the two samples indicates that CN-P4mg has a larger specific surface area and a lower bandgap than np-CN. Under visible light, CN-P4mg displays enhanced photocatalytic performance for the generation of hydrogen compared to that of np-CN and bulk graphite carbon nitride (g-C3N4). The photocatalytic hydrogen evolution rate of CN-P4mg reaches 16897.3 μmol g−1 h−1, which is 1.84 times that of np-CN and 72 times that of bulk g-C3N4. The experimental results confirm that the addition of triaminotriphenylamine provides a modified design for developing metal-free carbon nitride derivatives and a new route to study efficient photocatalytic materials.

Graphical abstract: Modification of graphite carbon nitride by adding an ultra-micro amount of triaminotriphenylamine for superior photocatalytic hydrogen evolution

Article information

Article type
Paper
Submitted
24 Jan 2022
Accepted
06 Apr 2022
First published
07 Apr 2022

New J. Chem., 2022,46, 9057-9063

Modification of graphite carbon nitride by adding an ultra-micro amount of triaminotriphenylamine for superior photocatalytic hydrogen evolution

X. Chen, Y. Xu and G. Xu, New J. Chem., 2022, 46, 9057 DOI: 10.1039/D2NJ00393G

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